Platen printing-machine



(No Model.) 3'Sheets-Sheet 1. O. F. HOWE. PLATBN PRINTING MACHINE.

Patehted Jan. 24

wmmssnsi ATTORNEYS.

(No Model.) I I I 3 -She'ets-Sheet'2. C; P.. HOWE.

PLA'TEN PRINTING MACHINE.

No. 376356. Patent ed Jan. 24, 1888.

WITNESSES:

INVBNTOB:

8 K 1 ATTORNEYS.

N. PETERS, Pwlokilhogmpher. Washington. v.1;

- 4 (NoModeL) I '3 sheens sheet 3. G. I. HOWE.

- PLATEN PRINTING MACHINE.

No. 376,956. Patented Jan. 24, 1888.

IN VEN TOR WITNESSES! Q ATTORNEYS.

N, PETERS. Fhnlo-Ulhngnpher. Washinglm n. c, v

. To all whom, it. inctybofwern:

Be it known that 1, CHARLES F. HOWE, of

,PLATEN PRlNTINjGI-MACl-IINE.

SPECIPICATIONiorniing part of Letters Patent No. 376,956, dated fl'anuary 24-, 18 88, I H

- plication filed May 2. 1881. f Serial No.236,8fii. {No model.)

' Greenleaf, in the county of Washington and State of Kansas, have invented a new and Improved Platen Printing-Machine, of which the? following tion. The object of my invention is to provide a new and improved printing-press which is simple and du rable in construction, very et'- is a full, clear, and exact descrip-f fective in operation, and specially adapted fo doing general newspaper-printing. 4

The invention consists in "the construction and arrangement of various parts and details and combinations of .the same,-as will be fullydescribed hereinafter, and then pointed out in- \the pin'B, held in the vertical, slots E formed p in jthe'standards" E, secured tolthe top of the the claims. l

Reference is to be had to the accompanying:

' drawings, forming a part'ofthis specification,

I ment. I 7 same with parts of the feed-table broken out in which similarletters of reference indicate c'orrespondingparts in all the figures;

Figure 1 is aside elevation of my improve Fig. 2 isa section'aliplan view. of the and the platen removed. Fig. 3 is a vertical cross-section ofthe same 'on the line or x of tion of the extension ink-roller arm.

Fig. 1. Fig. 4 is an enlarged sectional eleva is an'enlarged'side elevation, partly in section,

is a similar view of the gripping-fingers and Fig. 8 is a side el'e'vationof the same.

of the platen-pitman and its connection with the platen. Fig. 6 is an elevation of thesame at right angles to 5. Fig. 7 is an enlarged plan view of the gripping-fingers and tripper. Fig. 9 is an end elevation of the same; and Fig. 10

tripper, showing the gripping-fingers open. I

The main frame A, of suitable construction, 1

is provided near its'middle with the upwardly extending, standards A" and A", of which the standard A is provided with a bracket, A

2 extending upward and carrying, in conjuncsecured on onefouter end of the platen-shaft O, mounted in suitable bearings in the standards A and A On the other'end of the platen-shaft C is secured the gear-wheel O inut D", which;when tn rn ed ens the pitnian.

and passing through fixed'arms F, secured to to a short shaft, 0*, having its bearings, inthe which. meshes into the gear-wheel C -{secured 6 standard A and in a bracket, Afiextnding outward from said standard. ,The shaftC pitmen D with the platen E. IThe pitmenD can be lengthened or shortened to suit the impression whichit is desired to make, and

connected at their screw-threaded endsby the. lengthensor short In the part D' of'each pitman Dis secured platen E. The lower end ofthe part D of the pitman- D rests against the spring E3, connected carries'a'fly-wheel, O for-maintaining the: momentum oftheplaten-shaft G. On the'shaft 0, between the standards A and A are formed the crank-armsO, connected by the platen- 6 1 1 each pitman consists ot';two-parts, D and D, i

to the latter and iheld between the standards It, and resting with its endslon the topf-of the g L platen E; This arrangement permits of giving a dwell on impression, as the platen becomes yielding in connection with the pitm'en'and Theplaten'E-is. guided in its the springs E up-andi-down motion by the rods F, secured, v

to the corners of the platen, extending' upward the standards A and A. Springs F are held. between said arms F and the platen E, so as to support the platen E, thus relieving the platen-shaft G from strain. I The platen E is held above the type-table G, supportedby suitable means froni the main frame A, and-extend ing horizontally from near one side'to' the other The type-table G supports, in

of said frame. the usual manner, the chase G, carryi'ngflthe type from which theimpression is to be made.

The upper ends of the type are in line with.

the upper edges of themain frame A, and on I the latter travel theinking-rollers H, Iconto eachof which is pivoted inthe middlethe pally, of two parts,'J and J, telescoping-one in the other, and of which thepartJis provided on its lower end with a collar, Jf, against which rests one'end' of aspring, J, coil'ed on I said part J, inclosed in the hollow party, and resting with its upper end against the on the main frame A.

On one end of the shaft K is secured the crank-arm K connected by the link K with the crank-arm L, formed on the shaft L, mounted in suitable bearings on the main frameA and the bracket A. On the shaft L is secured the bevel gear-wheel L, meshing into the bevel gear-wheel L, secured to the vertical shaft L, mounted in the brackets A and A, and carrying at its upper end the bevel gear-wheel L meshing into the bevel gearwheel L, secured to the main driving-shaft B.

On the outer ends of the main frame A are secured the brackets A", made of spring-steel or other suitable elastic material. On the brackets A at each end of the frame A, are mounted the shafts N and N, respectively, each carrying pulleys N placed suitable distances apart. Over each corresponding set of pulleys N on the shafts N and N passes an endless belt, 0, adapted to carry the paper to be printed from the feed-table S to the other end of the frame A, and delivering the paper to the usual fly connected with the machine. Each of the endless belts O is provided at one, two, or more places, which are equal distances apart, with gripping-fingers P, each consisting of afixed arm, P, on which is pivoted a springarm, P, said arms P and P" extending to one side of the belt 0, and being connected by a spring, P, which holds the gripping-fingers in a closed position.

The gripping-fingers are adapted to be.

opened by the trippers Q, secured to the main frame A on each side, directly under the feedtable S. Each tripper Q is provided with an inclined top adapted to engage the outer ends of the gripping-fingers P, so that when said outer ends enter the tripper Q then the fingers are opened when passing toward the small end of said tripper Q, as illustrated in Fig. 10.

The feed-table S is supported from the main frame at the rear end and is held in the usual inclined position, as shown in Fig. 1. The shaft N, which operates the belts O, is rotated by an endless belt, N, passing over the pulley N, secured to the rear shaft, N, and also passing over a pulley, N secured to the shaft L,

which receives its rotary motion from the main drivingshaft B by the gear-wheels L L", L, and L", connected as above described.

The operation is as follows: When the main shaft B is rotated, then its gear-wheel B, meshing into the gear-wheel B rotates the platenshaft 0, which, by its crank-arms C and the pitmen D, imparts an up-and-down motion to the platen E. The paper to be printed is fed from the feed-table S upon the belts O, which travel in the direction of the arrow a, and the lower end of the paper is passed between the fingers of the grippers P, which are then in an open position, as shown in Fig. 10, asthey then pass through the narrow ends of the trippersQ, and as soon as the paper is thrown on the gripping-fingers then the latter leave the trippers Q, whereby the spring P closes the gripping-arms, thus holding the front end securely in place and carrying the paper forward on the belts O in the direction of the arrow a. As soon as the grippers P arrive at the outer end of the platen E the lingers strike against the lugs E, projecting downward from the platen E, whereby the forward motion of the belts O is interrupted, and the belt N, imparting motion to said endless belts O, .is allowed to slip over its pulley N on the shaft N. The platen E has then already commenced to move downward by the action of the crankarms 0 and the pitmen D, and by the continued motion of which the paper and the belts O are moved downward with said platen upon the chase G, and the paper receives an impression from the type i u said chase G. The brackets A supporting the shafts N and N, being of elastic material, are drawn inward toward each other on the downward motion of the platen E, pressed on the upper parts of the belts O, and when the platen again rises.

then the elastic nature of the brackets A forces them to assume their normal position, as shown in Fig. 1. As soon as the impression is made, then the platen E rises again and permits the belts O to assume their normal position by the outward motion of the brackets A", as above described. The platen rises sufiiciently so that its lugs E disengage the grippingfingers P, whereby the belts O are again permitted to travel forward in the direction of the arrow a, as the pulley N is again free to rotate by the action of the belt N. The paper is carried to the outer ends of the belts O and delivered to the fly in the usual manner. When the platen E commences to rise, then the inking-rollers H travel from the ink-r0] lers R toward the front, thus passing over the type in the chase Gand inking the same, after which the rollersH travel backward again to their rear position near the rollers R until the platen E has descended and made the impression. This forward and tack-ward motion of the inking-rollers H is accomplished by the swinging motion imparted to the extension ink-roller arms J by the links K, connecting said extension ink-roller arms J with the arm K, secured to the shaft K, receiving an oscil-' lating motion from the rotating shaft L, connected by the crank-arm L and the link K i When the lowest position, and the .pitmen D are now 7 moved downward, against the springs E so that a yielding orsoi'timpression is given to the paper by the platen E The pressure with which the platen presses the paper upon the type is regulated by adjusting. thev nuts D so as to lengthen or shorten the pitmen D, thereby causing the springs E to press with more or less force against the platen andsaid pitmen D, thus causing a dwell of platen E on the type. When the ink-rollers H travel forward and backward on the mainframe A, the rod J of the extension roller-arm J is drawn in and out of the hollowpart J by the action of the swinging motionof saidpart J 2 and the spring J, which is' compressed when said. part J assumes an inclinedposition. l

,Having thus fullydescribed my invention, I claim as new and desire to secure by Letters Patent 1. In a printing-press, the combination, with a platen, of endless belts carrying the paper and held below said platen, pulleys over which i said endless belts pass, and elastic brackets supporting said pulleys and disposed to project obliquely outward from the main frame,

whereby said brackets yield bodilyinwardly the type and held belowsaid platen, and 'in'k-- ing-rollers adapted to travel over the type on when the platen presses the upper parts of the endlessbelts downward,substantially as shown and described.

2. In a printing-press, .a platen having an up-and-down motion, a type-tablecarryin'g the type-table between said platen and the type-table, in combination with endless belts carrying the paper and' held'at their upper parts between said platen and saidtype-table, pulleys over which said belts pass, and elasticbrackets supporting said pulleys, so that when the platen presses the upper parts of said endless. belts downward the elastic brack- .ets yield,and means, substantially as described,

for imparting an up-and-down motion to said.

platen, a rotary motion to said pulleys, and aforward and backward motion to s'aidink'ingrollers, substantially as shownand described.

3. In a printing press, the combination, with the platen having anup-and-down movement and provided with a pendent lug, of the belts provided with grippers held in' their closed position by springs, andtrippers,which lug is adapted to have contactwith said'grippers,.while the grippers are adapted to be opened .by the trippers, substantiallyas set forth. f Y

876,956 I i p a 4. In a printing-press, the combination, with theplaten E, of the pitmen D, adapted to be lengthened and shortened and pivotally connected with said platen, and the springs E, held betweenvthe lower ends of saidl'pitmen and said platen, substantially as shown and described.

5. In a printing-press the combination, i with the-platen E, provided with the slotted standards E, of I the pitmen D, adapted to be lengthened and shortened and pivotally con,- nected with said slottedstandards, and the springs E resting on the platen betweensaid standards and pressing against the lower ends of said pitmen, substantially; as 'shown and described. 6.1 In a printing -press, the combination with the platen E, receiving an up-and-down 'motion and provided witha lug, E, ofthe 7.5 7

belts'O, held with their upper parts below said platen E, and the'grippers P, adapted to carry the paper under the platen and strike? against [said lug E, so as to interrupttheiforl ward motion of said belts 0, substantially vas shown and described. T I Y 7.'j'In a printing-press, the combination,

with the main shaft B, of the transverse shaft f O, connected with said main shaft 13 and adapted to operate the platen, the crank-shaft v L, operated frolnsaid main shaftB and adapt ed to'impart a rotary motion to the endless belts O, and the oscillating shaft K, operated from said'crank'shaft L and adapted to im-. part a forward and backward motion, to the;

inking-rollers H through the arm K, secured tothetransverse shaft Kama the link K,

pivotallyconnected to the saidarm and to the ink-rollencarrying arm J, substantially as shown and described.

8. In" a printing -'press, the combination, with the main shaft B, of. the'transverse'shaft 0, connected with said main shaft B and. adapted'to operate the platen, the crank-' shaft L, operated from said main sh'aftB'and IOO adapted. to imparta rotary motion to the endless belts Q, and the oscillating shaft K I 

